Cumincad : CUMINCAD Papers : Search Results

CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id	3674
authors	Richens, P.
year	1997
title	Image Processing for Urban Scale Environmental Modelling
source	Proceedings of the Intemational Conference Building Simulation 97 - Prague, 163-171
summary	If a map of a city is encoded as a Digital Elevation Model, it becomes amenable to image-processing software, such as the public-domain NIH Image application. Standard techniques can be used to measure plan areas and volumes and simple macros can be devised to measure perimeter length and wall areas. A macro for calculating shadow volumes is elaborated for the simulation of solar gains and daylight, including indirect lighting, leading to the possibility of an image-based urban-scale environmental model.
series	other
email
last changed	2003/04/23 15:50

_id	cc8e
authors	Richens, P.
year	1997
title	Image Processing for Urban Scale Environmental Modelling
source	Proceedings Fifth International IBPSA Conference: Building Simulation ’97 (Prague). International Building Performance Simulation Association
summary	If a map of a city is encoded as a Digital Elevation Model, it becomes amenable to image-processing software, such as the public-domain NIH Image application. Standard techniques can be used to measure plan areas and volumes and simple macros can be devised to measure perimeter length and wall areas. A macro for calculating shadow volumes is elaborated for the simulation of solar gains and daylight, including indirect lighting, leading to the possibility of an image-based urban-scale environmental model.
series	other
email
more	http://www.arct.cam.ac.uk/research/pubs/html/rich97b/
last changed	2000/03/05 19:05

_id	2a5e
authors	Does, J. van der and Giró, H.
year	1997
title	Design communication and image processing
source	Architectural and Urban Simulation Techniques in Research and Education [Proceedings of the 3rd European Architectural Endoscopy Association Conference / ISBN 90-407-1669-2]
summary	In the proceedings of the first EAEA conference, 1993, I mentioned our first study focused on refining endoscopic video images of a detailed architectural model and drawings. The study was based on work with 900 subjects, of which 200 were professional architects. It has led to a number of technical improvements. In the second study we compared computer-aided design techniques with two techniques from the first study, endoscopic video recordings and coloured and black and white elevations and perspective drawings. Four different groups of 50 subjects took part in this research. We found that computer images are invariably judged to be of moderate value, while drawings yielded consistently high scores. Endoscopic video recordings of the scale model received high scores as far as emotional response is concerned, and moderate scores when the participants were questioned on the actual content of the recordings.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	aa79
authors	Kardos, K.
year	1997
title	Laboratorial verification of ideas for urban space compositional design completion
source	Architectural and Urban Simulation Techniques in Research and Education [Proceedings of the 3rd European Architectural Endoscopy Association Conference / ISBN 90-407-1669-2]
summary	The subject-matter of the contribution is presentation of the non-conventional didactical methods application in architectural education and research at the Faculty of Architecture of the Slovak Technical University in Bratislava. It is an application of a laboratorial method of architectural endoscopy based on a model urban space simulation principle and on the acquirement of an electrooptical visual display image information from a recording periscope unit interaction in the real time and the real model space, with the option of spontaneous semantic evaluation of the output on a video-monitor and of a synchronic timing process recording on a magnetoscope. Application of a consequential powerful PC-configuration with creative software enables further digital sequential processing both on the graphical output and for multimedial presentation.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	ddss9837
id	ddss9837
authors	Liu, Yu-Tung and Bai, Rui-Yuan
year	1998
title	The roles of virtual reality, image processing, and multimedia in thedesign of public spaces: 1997 Hsinchu Project
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	This paper examines the procedure of visual impact analysis and assessment proposed by Rahman and reviews the use of CAD applications in urban projects in the real world. A preliminary computerized procedure for visual impact analysis and assessment is proposed. An experiments wasconducted in our laboratory to verify the preliminary procedure. In order to further study the revised procedure in real urban projects, it was also applied into the renew project of The Eastern Gate Plaza located in the center of city Hsinchu, Taiwan from 1996 to 1998. According to several face-to-face discussions with Hsinchu habitants, government officials, and professional designers, a final computerized procedure for visual impact analysis and assessment is concluded.
series	DDSS
last changed	2003/08/07 16:36

_id	2e5a
authors	Matsumoto, N. and Seta, S.
year	1997
title	A history and application of visual simulation in which perceptual behaviour movement is measured.
source	Architectural and Urban Simulation Techniques in Research and Education [3rd EAEA-Conference Proceedings]
summary	For our research on perception and judgment, we have developed a new visual simulation system based on the previous system. Here, we report on the development history of our system and on the current research employing it. In 1975, the first visual simulation system was introduced, witch comprised a fiberscope and small-scale models. By manipulating the fiberscope's handles, the subject was able to view the models at eye level. When the pen-size CCD TV camera came out, we immediately embraced it, incorporating it into a computer controlled visual simulation system in 1988. It comprises four elements: operation input, drive control, model shooting, and presentation. This system was easy to operate, and the subject gained an omnidirectional, eye-level image as though walking through the model. In 1995, we began developing a new visual system. We wanted to relate the scale model image directly to perceptual behavior, to make natural background images, and to record human feelings in a non-verbal method. Restructuring the above four elements to meet our equirements and adding two more (background shooting and emotion spectrum analysis), we inally completed the new simulation system in 1996. We are employing this system in streetscape research. Using the emotion spectrum system, we are able to record brain waves. Quantifying the visual effects through these waves, we are analyzing the relation between visual effects and physical elements. Thus, we are presented with a new aspect to study: the relationship between brain waves and changes in the physical environment. We will be studying the relation of brain waves in our sequential analysis of the streetscape.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	ab5b
authors	Seta, S., Kohno, T. and Matsumoto, N.
year	1997
title	A visual simulation system using scale models and computer graphics
source	Architectural and Urban Simulation Techniques in Research and Education [3rd EAEA-Conference Proceedings]
summary	It is very important to simulate the landscape when planning large scale buildings, such as skyscrapers and high-rise condominiums, and high-level visual simulation is anticipated in Japan. A landscape simulator using scale models which we have developed is useful to obtain eye-level images. Computer graphics is also useful to obtain eye-level images because of the high quality. This paper reports on a visual simulation system using a new image composition technique to combine the scenery of scale models recorded by the simulator with computer graphics images. The video images of scale models are obtained an eye-level images from a small CCD video camera controlled by a personal computer. The background images including the sky and clouds are created as CG images. A real-time image composition technique has been developed by means of a video editing system to combine the video images of scale models with the CG images. We show the potential of this hybrid simulation method as a useful technique for visual simulation.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	avocaad_2001_19
id	avocaad_2001_19
authors	Shen-Kai Tang, Yu-Tung Liu, Yu-Sheng Chung, Chi-Seng Chung
year	2001
title	The visual harmony between new and old materials in the restoration of historical architecture: A study of computer simulation
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	In the research of historical architecture restoration, scholars respectively focus on the field of architectural context and architectural archeology (Shi, 1988, 1990, 1991, 1992, 1995; Fu, 1995, 1997; Chiu, 2000) or on architecture construction and the procedure of restoration (Shi, 1988, 1989; Chiu, 1990). How to choose materials and cope with their durability becomes an important issue in the restoration of historical architecture (Dasser, 1990; Wang, 1998).In the related research of the usage and durability of materials, some scholars deem that, instead of continuing the traditional ways that last for hundreds of years (that is to replace new materials with old ones), it might be better to keep the original materials (Dasser, 1990). However, unavoidably, some of the originals are much worn. Thus we have to first establish the standard of eliminating components, and secondly to replace identical or similar materials with the old components (Lee, 1990). After accomplishing the restoration, we often unexpectedly find out that the renewed historical building is too new that the sense of history is eliminated (Dasser, 1990; Fu, 1997). Actually this is the important factor that determines the accomplishment of restoration. In the past, some scholars find out that the contrast and conflict between new and old materials are contributed to the different time of manufacture and different coating, such as antiseptic, pattern, etc., which result in the discrepancy of the sense of visual perception (Lee, 1990; Fu, 1997; Dasser, 1990).In recent years, a number of researches and practice of computer technology have been done in the field of architectural design. We are able to proceed design communication more exactly by the application of some systematic softwares, such as image processing, computer graphic, computer modeling/rendering, animation, multimedia, virtual reality and so on (Lawson, 1995; Liu, 1996). The application of computer technology to the research of the preservation of historical architecture is comparatively late. Continually some researchers explore the procedure of restoration by computer simulation technology (Potier, 2000), or establish digital database of the investigation of historical architecture (Sasada, 2000; Wang, 1998). How to choose materials by the technology of computer simulation influences the sense of visual perception. Liu (2000) has a more complete result on visual impact analysis and assessment (VIAA) about the research of urban design projection. The main subjects of this research paper focuses on whether the technology of computer simulation can extenuate the conflict between new and old materials that imposed on visual perception.The objective of this paper is to propose a standard method of visual harmony effects for materials in historical architecture (taking the Gigi Train Station destroyed by the earthquake in last September as the operating example).There are five steps in this research: 1.Categorize the materials of historical architecture and establish the information in digital database. 2.Get new materials of historical architecture and establish the information in digital database. 3.According to the mixing amount of new and old materials, determinate their proportion of the building; mixing new and old materials in a certain way. 4.Assign the mixed materials to the computer model and proceed the simulation of lighting. 5.Make experts and the citizens to evaluate the accomplished computer model in order to propose the expected standard method.According to the experiment mentioned above, we first address a procedure of material simulation of the historical architecture restoration and then offer some suggestions of how to mix new and old materials.By this procedure of simulation, we offer a better view to control the restoration of historical architecture. And, the discrepancy and discordance by new and old materials can be released. Moreover, we thus avoid to reconstructing ¡§too new¡¨ historical architecture.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	0e8f
authors	Alavalkama, I. and Siitonen, P.
year	1997
title	Developing a new endoscopy laboratory with digital tools.
source	Architectural and Urban Simulation Techniques in Research and Education [Proceedings of the 3rd European Architectural Endoscopy Association Conference / ISBN 90-407-1669-2]
summary	Tampere School of Architecture had to leave its old down-town building and move to the TU Tampere university campus in Hervanta, 10 km away. In this process, the 20 years old endoscopic system "The Urban Simulator" was one of the victims. Old mechanical parts and especially the original home-built microcomputer system were too old to compete with modern computer-aided methods. A new endoscopical system is now under construction, using all of the 20-year experience, new technical components and computers for camera control and picture processing. Real-material modelling is used together with computer-aided planning and visualization methods taking the best from both sides.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	1a91
id	1a91
authors	Bourdakis, V.
year	1997
title	The Future of VRML on Large Urban Models.
source	The 4th UK VRSIG Conference
summary	In this paper, the suitability and usability of VRML for urban modelling is discussed based on the experience gained by the creation of urban models of varying sizes, level of detail and use. Areas where the current VRML specification is failing to satisfy the needs of large-scale urban modelling are highlighted. Properties of a successful alternative or VRML3.0 specification are suggested and briefly discussed.
keywords	3D City Modeling, Development Control, Design Control
series	other
email
last changed	2003/11/21 15:16

_id	2e36
authors	Bourdakis, Vassilis
year	1997
title	Making Sense of the City
source	CAAD Futures 1997 [Conference Proceedings / ISBN 0-7923-4726-9] München (Germany), 4-6 August 1997, pp. 663-678
summary	Large-scale, three dimensional, interactive computer models of cities are becoming feasible making it possible to test their suitability as a visualisation tool for the design and planning process, for data visualisation where socio-economic and physical data can be mapped on to the 3D form of the city and as an urban information repository. The CASA developed models of the City of Bath and London's West End in VRML format, are used as examples to illustrate the problems arising. The aim of this paper is to reflect on key issues related to interaction within urban models, data mapping techniques and appropriate metaphors for presenting information.
keywords	3D City modeling, Urban Modelling, Virtual Environments, Navigation, Data Mapping, VRML
series	CAAD Futures
email
last changed	2003/11/21 15:16

_id	ddss9829
id	ddss9829
authors	De Hoog, J., Hendriks, N.A. and Rutten, P.G.S.
year	1998
title	Evaluating Office Buildings with MOLCA(Model for Office Life Cycle Assessment)
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	MOLCA (Model for Office Life Cycle Assessment) is a project that aims to develop a tool that enables designers and builders to evaluate the environmental impact of their designs (of office buildings) from a environmental point of view. The model used is based on guidelinesgiven by ISO 14000, using the so-called Life Cycle Assessment (LCA) method. The MOLCA project started in 1997 and will be finished in 2001 resulting in the aforementioned tool. MOLCA is a module within broader research conducted at the Eindhoven University of Technology aiming to reduce design risks to a minimum in the early design stages.Since the MOLCA project started two major case-studies have been carried out. One into the difference in environmental load caused by using concrete and steel roof systems respectively and the role of recycling. The second study focused on biases in LCA data and how to handle them. For the simulations a computer-model named SimaPro was used, using the world-wide accepted method developed by CML (Centre for the Environment, Leiden, the Netherlands). With this model different life-cycle scenarios were studied and evaluated. Based on those two case studies and a third one into an office area, a first model has been developed.Bottle-neck in this field of study is estimating average recycling and re-use percentages of the total flow of material waste in the building sector and collecting reliable process data. Another problem within LCA studies is estimating the reliability of the input data and modelling uncertainties. All these topics will be subject of further analysis.
keywords	Life-Cycle Assessment, Office Buildings, Uncertainties in LCA
series	DDSS
last changed	2003/08/07 16:36

_id	4eea
authors	Sook Lee, Y. and Kyung Shin, H.
year	1997
title	Development and visualization of interior space models for university professor's office.
source	Architectural and Urban Simulation Techniques in Research and Education [3rd EAEA-Conference Proceedings]
summary	When visualization is required in academic area, the sound mundane realism ideally defined through scientific research is a requirement to make the testing of the visualized model worthy. Spatial model development is an essential part in every space type. Without space standards, architecture can not be existed. Lack of space standards causes some confusion, delay of decision, and trials and errors in building practice. This research deals with university professor's office space model. Currently in Korea, university building construction has been increased because of rapidly growing quantitative and qualitative needs for better education. There has been a wide range of size preference of the office space. Because of Korea's limited land availability, deliberate consideration in suggesting the minimum space standards without sacrificing the function is needed. This is especially important since professors traditionally have been highly respected from society, thereby rather authoritative with strong territoriality and privacy need and relatively sensitive to space size. Thus, presenting the 3D visual models to convince professors that the models accommodate their needs is important as well as the search process for ideal space models. The aim of the project was to develop a set of interior space models for university professor's office. To achieve the goal, 3 research projects and 1 design simulation project were implemented. Objectives of the 4 projects were 1) to identify the most popular office space conditions that is architectural characteristics, 2) to identify the most popular office space use type, 3) to identify user needs for spatial improvement, 4) to develop and suggest interior design alternatives systematically and present them in 3 dimentional computer simulation. This simulated images will be a basis of scaled model construction for endoscopy research and of full scale modelling in the future.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	07ae
authors	Sook Lee, Y. and Mi Lee, S.
year	1997
title	Analysis of mental maps for ideal apartments to develop and simulate an innovative residential interior space.
source	Architectural and Urban Simulation Techniques in Research and Education [3rd EAEA-Conference Proceedings]
summary	Even though results of applied research have been ideally expected to be read and used by practitioners, written suggestions have been less persuasive especially, in visual field such as environmental design, architecture, and interior design. Therefore, visualization of space has been frequently considered as an ideal alternative way of suggestions and an effective method to disseminate research results and help decision makers. In order to make the visualized target space very solid and mundane, scientific research process to define the characteristics of the space should be precedent. This presentation consists of two parts : first research part ; second design and simulation part. The purpose of the research was to identify the ideal residential interior characteristics on the basis of people's mental maps for ideal apartments. To achieve this goal, quantitative content analysis was used using an existing data set of floor plans drawn by housewives. 2,215 floorplans were randomly selected among 3,012 floorplans collected through nation-wide housing design competition for ideal residential apartments. 213 selected variables were used to analyze the floorplans. Major contents were the presentational characteristics of mental maps and the characteristics of design preference such as layout, composition, furnishing etc. As a result, current and future possible trends of ideal residence were identified. On the basis of the result, design guidelines were generated. An interior spatial model for small size unit using CAD was developed according to the guidelines. To present it in more effective way, computer simulated images were made using 3DS. This paper is expected to generate the comparison of various methods for presenting research results such as written documents, drawings, simulated images, small scaled model for endoscopy and full scale modeling.
keywords	Architectural Endoscopy, Endoscopy, Simulation, Visualisation, Visualization, Real Environments
series	EAEA
email
more	http://www.bk.tudelft.nl/media/eaea/eaea97.html
last changed	2005/09/09 10:43

_id	b3b1
authors	Ebrahim, Mostafa Abdel-Bary
year	1997
title	Application and evaluation of digital image techniques in close range photogrammetry
source	University of Innsbruck
summary	Most of the orthomapping techniques that are used in the present are restricted to surfaces that arise from a function of 'ground co- ordinates' z = f (x, y) , so-called 2.5D objects. Some techniques are also restricted to surfaces with kind of smooth shape or even to regular surfaces, but all of them are established to rectify images (although increasingly digitally). A new approach has been established for digital restitution and orthomapping of close range objects of almost any shape and size and with almost no restriction to images or objects. The idea of this approach is an inversion of the photographic technique and is (on the contrary to the 'rectification approach') strictly object oriented. All of the objects are regarded to be describable in their geometrical shape by a number of particular faces that can be regular or irregular but can anyway be created in a CAD environment. The data needed to get this surface can come from any photogrammetric, tachometric or other source with any particular one wants to have for the results. All the details that lie on that surface don't have to be restituted by analog or analytical point measurement but can after that be projected onto this surface from any photo, from any side and with any camera they have been taken. A 'Digital Projector' does the projection of the photos from the same positions and with the same inner orientation as of photographic camera. Using this approach any measurements of any details on the facades can be done easily. No details of the object can be neglected, none can be forgotten, no prior filtering of details has preceded this using. The full information of the original photos is available in the results. The results of the restitution can be presented in many ways. One of them is create orthoimages in any scale. Other results are any perspective or parallel view of the object. Other use of the strict 3D map-covered object for visualization (e.g. in architecture and archaeology application) is possible
keywords	Digital Image; Digital Projector; Close Range Photogrammetry; Architectural Photogrammetry; 2.5d Objects; Visualization
series	thesis:PhD
email
more	http://www.arcs.ac.at/dissdb/rn027356
last changed	2003/02/12 22:37

_id	6a37
authors	Fowler, Thomas and Muller, Brook
year	2002
title	Physical and Digital Media Strategies For Exploring ‘Imagined’ Realities of Space, Skin and Light
doi	https://doi.org/10.52842/conf.acadia.2002.013
source	Thresholds - Design, Research, Education and Practice, in the Space Between the Physical and the Virtual [Proceedings of the 2002 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-11-X] Pomona (California) 24-27 October 2002, pp. 13-23
summary	This paper will discuss an unconventional methodology for using physical and digital media strategies ina tightly structured framework for the integration of Environmental Control Systems (ECS) principles intoa third year design studio. An interchangeable use of digital media and physical material enabledarchitectural explorations of rich tactile and luminous engagement.The principles that provide the foundation for integrative strategies between a design studio and buildingtechnology course spring from the Bauhaus tradition where a systematic approach to craftsmanship andvisual perception is emphasized. Focusing particularly on color, light, texture and materials, Josef Albersexplored the assemblage of found objects, transforming these materials into unexpected dynamiccompositions. Moholy-Nagy developed a technique called the photogram or camera-less photograph torecord the temporal movements of light. Wassily Kandinsky developed a method of analytical drawingthat breaks a still life composition into diagrammatic forces to express tension and geometry. Theseschematic diagrams provide a method for students to examine and analyze the implications of elementplacements in space (Bermudez, Neiman 1997). Gyorgy Kepes's Language of Vision provides a primerfor learning basic design principles. Kepes argued that the perception of a visual image needs aprocess of organization. According to Kepes, the experience of an image is "a creative act ofintegration". All of these principles provide the framework for the studio investigation.The quarter started with a series of intense short workshops that used an interchangeable use of digitaland physical media to focus on ECS topics such as day lighting, electric lighting, and skin vocabulary tolead students to consider these components as part of their form-making inspiration.In integrating ECS components with the design studio, an nine-step methodology was established toprovide students with a compelling and tangible framework for design:Examples of student work will be presented for the two times this course was offered (2001/02) to showhow exercises were linked to allow for a clear design progression.
series	ACADIA
email
last changed	2022/06/07 07:51

_id	673a
authors	Fukuda, T., Nagahama, R. and Sasada, T.
year	1997
title	Networked Interactive 3-D design System for Collaboration
doi	https://doi.org/10.52842/conf.caadria.1997.429
source	CAADRIA ‘97 [Proceedings of the Second Conference on Computer Aided Architectural Design Research in Asia / ISBN 957-575-057-8] Taiwan 17-19 April 1997, pp. 429-437
summary	The concept of ODE (Open Design Environment) and corresponding system were presented in 1991. Then the new concept of NODE. which is networked version of ODE. was generated to make wide area collaboration in 1994. The aim of our research is to facilitate the collaboration among the various people involved in the design process of an urban or architectural project. This includes various designers and engineers, the client and the citizens who may be affected by such a project. With the new technologies of hyper medium, network, and component architecture, we have developed NODE system and applied in practical use of the collaboration among the various people. This study emphasizes the interactive 3-D design tool of NODE which is able to make realistic and realtime presentation with interactive interface. In recent years, ProjectFolder of NODE system, which is a case including documents, plans, and tools to proceed project., is created in the World Wide Web (WWW) and makes hyper links between a 3-D object and a text, an image. and other digital data.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	a106
authors	Martelli, T.
year	1997
title	Automatic Procedure for the Dimensioning and Arrangement of Space Units of an Architectural Organism
doi	https://doi.org/10.52842/conf.ecaade.1997.x.v5q
source	Challenges of the Future [15th eCAADe Conference Proceedings / ISBN 0-9523687-3-0] Vienna (Austria) 17-20 September 1997
summary	The application of a Mathematical Programming (M.P.) technique, typical of Operational Research (O. R.), is proposed as a means to cope with the decisional problem of layout dimensioning and arrangement. Within the ambit of O.R., Mathematical Programming. deals with decisional problems of simplest structure: only one decision factor, only one preference function, complete (deterministic) knowledge of the environment in which one operates. Such a problem, in standard form, presents an objective function Z=f(x), of n variables x, to be minimized and a system of linear equations and/or inequalities, on the same variables, which represent the constraints and which define an admissible area for the solution. The architectural organism is modelled as an assembly of parallelepiped shaped space entities or units, provided with a certain number of "holes" that permit functional corresponding connection. The pursued intent being optimal assembly. The model, in its mathematical form, fits a standard Non-Linear M.P. (N.L.P.) problem, since the objective function Z is non-linear and the constraints are represented by inequalities. In its graphic form it reproduces an image of all the space units constituting the organism; moreover it is able to represent these units, in their logical and physical individuality, and their mutual relationship, as well as the ones with the external environment.
keywords	Layout Dimensioning, Modelling, Mathematical Programming, Gradient Method
series	eCAADe
email
more	http://info.tuwien.ac.at/ecaade/proc/martelli/martelli.htm
last changed	2022/06/07 07:50

_id	dd67
authors	Paterson, A.M., Dowling, G.R. and Chamberlain, D.A.
year	1997
title	Building inspection: can computer vision help?
source	Automation in Construction 7 (1) (1997) pp. 13-20
summary	Computer vision is forever expanding into new areas, especially in the field of inspection. The work presented here shows how computer vision has the potential to improve the exterior inspection of large buildings. A robot is being developed at City University, London that will perform a number of tests and the initial use of computer vision is to locate the robot thus enabling the position of building defects to be recorded more reliably than at present. A system has been developed that allows the inspector to tag just four points on the building, seen through a camera, to points on a CAD diagram of that building. With that information, a mapping can be found, so that for any new point in the image, and in particular that of the robot, its position on the building can be found. Work has progressed to automate the process such that now the computer uses a number of image processing techniques to extract key features of the building scene. These features are compared and matched to a CAD diagram, from which the mapping between the image and diagram is produced. This then allows the true position of the robot to be found. Results are given for a model building and robot demonstrating the accuracy of the algorithm, together with some results from residential flats, concluding that computer vision can indeed help building inspection.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:23

_id	4308
authors	Salisbury, M., Wong, M., Hughes, J. and Salesin, D.
year	1997
title	Orientable Textures for Image Based Pen-and-Ink Illustration
source	Computer Graphics Proceedings, Annual Conference Series 1997. ACM SIGGRAPH, pp. 401-406
summary	We've built a system for creating pen-and-ink illustrations that uses three components: darkness, texture, and orientation. Previous systems have used the first two. To allow the user to specify the third one, orientation, we have built an interactive direction field editor in which the user effectively 'paints' directions onto the illustration. The system then automatically creates the illustration at the requested output scale.
series	journal paper
last changed	2003/04/23 15:50

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